Calculators

Loan, tip, BMI, GPA, tax, interest, and business math calculators with clear results.

15 tools in this category.

Compute body mass index with metric or imperial units.

Estimate monthly payment and total interest.

Break down principal and interest for home loans.

Split restaurant bills with custom tip rates.

Find percent of, change, and delta quickly.

Calculate exact age between two calendar dates.

Weighted GPA from course credits and grades.

Project savings with compounding intervals.

Estimate take-home after flat withholdings.

Show sale price from percent off or amount off.

Add or remove tax to reach out-the-door totals.

Trip cost from MPG, distance, and gas price.

What score you need on finals to hit a target.

Rough fertility window from last period length.

Estimate TDEE using Mifflin-St Jeor approximation.